KristofferR's blog View Details
Posted by KristofferR | Jan 13, 2019 @ 11:59 AM | 1,299 Views
Car time again!

This was given to me by a relative of my ex wife. It spent time collecting dust on the shelf, since I did not know what to do with it and did not have the Super Motivation (pun) to use it myself. Eventually, it turned out that my cousin wanted an RC for his young kid. YAY! Good reason to go ahead.

As usual, I went over the car, cleaned it, checked for damage, adjusted things and then tried it. With some fresh batteries and some cleaning, it worked, but pretty badly. I though the batteries were the problem but after lots of experimenting including some LiPO attempts it turned out that the LM-406FB ESC just did not want to work - sometimes it would, but it would just drop and stutter during load. I tried different motor, servo, RX, batteries and another ESC and it was always the original ESC that refused to work. I took it apart to look for broken solders or faults but did not find anything and then it died completely on me. In went a Tamiya TBLE-02 and suddenly the car went muuuuch better.

Among other things I did was to adjust the servo saver which had a horrible slop in the neutral position, which made it impossible to drive straight. After that just general work like tightening screws, cleaning etc. The original plate that held the ESC was cut and glued to make a splash-proof ESC room in the chassis.

And, the chassis. The car is surprisingly nice to drive - it is after all a close (carbon?) copy of a Tamiya TL01. The only thing giving away the cheap...Continue Reading
Posted by KristofferR | Dec 30, 2018 @ 01:44 AM | 1,015 Views
Not really RC, this. Still fun and very mechanical. It’s a bit like working on old servos ...

After restoring my cousins little Märklin locomotive with good success another FOUR landed on my desk.

There is not much to these little items - knocking out the pins holding the wheels gears and then the usual stuff like cleaning gears (filing the teeth, rubbing etc to get them perfectly smooth) polishing the commutator, soldering up the cables etc.

The electromechanical direction switch relay is probably the most intricate part.
I used some LiPO batteries in series to set it up....

The old track built in 1958 still works fine. Looking forward to locomotion in 2019.
Posted by KristofferR | Aug 25, 2018 @ 02:04 PM | 1,914 Views
This is me driving and filming my 1:10 Traxxas Summit up a local clifftop. It is very steep, perilous to walk up when wet and plain difficult in the dry. The Summit is a peculiar car. The individual suspension, lockable diffs and the hi/lo gears gives a range of use that is matched by few other RC:s. It is basically good at most things but not really the best at anything. The fantastic suspension articulation sometimes makes it difficult to find terrain that really challenges the car. I run my completely stock and use it as a trail truck and hiking companion. The only negative thing is that it is heavy to carry when the batteries are depleted. Bring an extra set to make it all the way!

Camera, driving, editing: Kristoffer
Music: Soundcloud.com/Edgery
Location: Billdal, Sweden
Equipment: Traxxas Summit, Turnigy2000
Edited in Wondershare Filmora

Traxxas Summit 1:10 crawling and climbing (3 min 58 sec)

Posted by KristofferR | Aug 22, 2018 @ 02:46 PM | 1,350 Views
I am fortunate enough to be able to walk to a suitable field. Yesterday I took the tx in one hand and the FunCub in the other and enjoyed a late evening flight in still air. As dark replaced light I ended up lower and closer, finally getting some moonlight flight. It is a joy to fly the Cub, and the big wheels are perfect for grass landings.
Posted by KristofferR | Aug 10, 2018 @ 01:10 PM | 2,155 Views
Wow, just wow. I got into DLG with the Alula and managed once to throw it hard enough to watch it fall apart in the air. But I enjoyed it a lot.

The ELF, well it is something else. On paper it should be, the price, the carbon fiber, the competition breeding. And it is. Even on my first exploratory throws, late evening in still air, I got the thing to thermal. Seven supertight circles, staying up at three meters. Addictive.

This ELF is used - I’m the third owner. The fuse is repaired which added 15% to the AUW. My RX-5 from Multiplex was a press fit and I used some screws from a Traxxas to fit the wing cleanly. I still don’t have the guts to really launch it but I’m building up to it. I also expect it to slope great in light winds.
Posted by KristofferR | Jul 14, 2018 @ 02:23 AM | 1,943 Views
The sun was beaming down and the temperature about 28 degrees. We’re used to icy damp winds and this was a relief.

Seppo brought his new Ahi, his Alula and a modified ST Salto. He was extraordinary with the Salto. Seppo has a reputation for being one of the best pilots in the area but this was the first time I have seen him letting loose and it was a joy.

I had my Funglider out, and there was immense thermals on top of the slope winds. Twice I had to dive out to avoid specking out.

Dan flew a mash-up RE balsa glider but when we launched his glass Tabasco it crashed, luckily with no damage.

In all, an awesome slope day.
Posted by KristofferR | Jun 11, 2018 @ 02:56 PM | 1,824 Views
The Funcub needed some colour.

I used the included kit stickers, cut and moved them around to get a little more strict look than stock. Result in the pictures.
Posted by KristofferR | Jun 09, 2018 @ 11:37 AM | 2,616 Views
Tech Toys V24 RC Boat, brushless conversion.

The V24 is a toygrade boat. A friend gave it to me, it had dead electronics. I have since bought a stock V24 but it is very boring. The brushless is faster, more quiet and smoother to steer Most of the gear is leftovers from cars and planes. The servo is not a noname, I swapped it for a leftover Dymond wing servo.

Hull: Tech Toys V24
Rudder: Banggood "blue anodized"
Propeller: 35 mm plastic
Shaft: Banggood, Stainless
Motor/ESC: Racerstar 540 combo, Banggood
Servo: Dymond
LiPO: 2s Zippy Flightmax 2200mAh
Radio: Radiolink RC4GS

Tech Toys V24 RC Boat, brushless conversion (2 min 56 sec)



I have added a simple watercooling since this test.
Posted by KristofferR | Jun 09, 2018 @ 02:25 AM | 2,714 Views
Months ago I finished a Tech Toys V24 boat given to me as a hull - electronics no longer working. I put leftover parts from a car into it and this week I tried it in the sea. During the time my modded V24 sat on the shelf, a used one popped up locally and was mine for €18.

The power in the mod one is a 2s 2200mAh Lipo and a Racerstar 540 brushless motor/esc combo from a car. A 12g servo does helmsman duty. Propeller, propeller shaft, rudder are new items from Banggood. I looked at pics of similar boats and selected sizes and put the parts where it looked right.

In the bathroom sink the modded boat felt about as strong as the stock one, splashing surprising amounts of water everywhere.

The stock V24 I tested with a stock 6-cell NiMH setup. It was not particularly fast, and the sound was dreadful too, but it looked nice in the water.

The modded one was fast. Very fast. It struggled at first gurgling around at slow speed and not turning well and after some exploratory turns I opened up full throttle. Once up on the step it took off like a shot, with little more than the propeller in the water. Whoo! Being new to boats, I turned too hard and the boat flipped and rolled a complete lap. It jumped on the waves too and after some passes the top lid fell off.

So, the lid needs securing, a better battery tray, more steering throw for low speed handling and ... that should do it. Back to the building board!

The stock v24 I gave one more chance with the lightest 6-cell I had but it is just slow, way too toy-grade and crude to control. Despite some attempts to silence it the sound is unpleasant. I might keep it as a spare hull, perhaps.
Posted by KristofferR | Jun 07, 2018 @ 10:44 AM | 2,421 Views
Premiere flight!

Wind has died out, sun is down and mosquitoes had me for dinner.

The FunCub has become one of the all time classics and it’s easy to understand why: Excellent flight characteristics and control harmony, goes insanely slow, easy to fly but fully aerobatic.

Usually on a first flights it’s jitters and controls tuning. This time I did spins, inverted flight, stall turns and just enjoyed the flight and forgot it was the maiden! Both touchdowns at my feet. >400W ensures spectacular climbs too.

Also it was my first proper flight with the Multiplex Cockpit SX9. Very happy with this radio and for me, the rollers felt very natural.
Posted by KristofferR | Jun 06, 2018 @ 05:34 AM | 2,191 Views
Funcub

In my ever-growing hangar of Multiplex models is now the Funcub. I got the kit version from my fb who originally bought it for spares.

The build was pretty straightforward, instructions clear and precise, though I actually stumbled on some things - in particular the rear wheel install requires some thought. A pro tip is to just remove the center spread with the instruction figures to be able to read in your preferred language and look at the figures at the same time!

I would recommend waiting to install the elevator and rudder snakes until after the tail is done. The ”cut to length” instruction only made sense after I had them installed.

Servo choice were Emax ES08MA all around. They are not identical to Multiplex recommended items, so the crevices in the fuselage for the rudder and elevator were a bit too large. I took the opportunity to glue some hard balsa to create a tight fit and finished it with screws for good measure.

I also did the removable tail mod I found here at RCGroups, inserting a threaded wood block in the fin and a nylon screw from underneath.

Just for good measure I put some carbon strips in the fuse before gluing it together. I have done this to several of my Elapor models and they become very stiff, almost balsa-like.

The only receiver I had available was a Multiplex DR-6 so the dual flap servos use a Y-cable. Rather than buying an electronic-servo-reversing-gadget I cut out the wing to fit one flap servo the other way...Continue Reading
Posted by KristofferR | Apr 29, 2018 @ 02:28 AM | 3,430 Views
The first mod on my TRX4 Bronco:

Tamiya PS-55 Flat Clear on the hardtop. Masking tape, newspaper, spray.

I cleaned the body with dishsoap and water and then used a (synthetic) deerskin to wipe it off. Rattle can heated in a small bucket of warm water. Two layers. Let it sit for a day before spraying the second one.

Pleased with the result! The ”tinted” rear windows appears a lot better now.
Posted by KristofferR | Mar 16, 2018 @ 02:08 PM | 2,021 Views
A used Summit for sale appeared temptingly on a local site. It has long been on my wishlist and I decided to go for it. Completely stock and in good condition, save for two of the four LiPO:s that had, according to my voltmeter, been stored fully charged and were quite swollen. NiMH:s were fine.

Driving the Summit was interesting. The appearance was familiar as I have had two 1/16 Summit VXL:s before. The increase in scale and the low/hi gears and lockable diffs were unfamiliar though. The big Summit has a better CG for its width and length than the small one and it really showed - it almost clung to steep cliffs.

With locked diffs and low gear it was tremendously capable and easily mastered one of my favourite difficult trails. Walking back on the wide gravel road, the high gear and open diff setting allowed me to slide around and send jumps of different obstacles.

I got about 40 minutes of driving on the stock NiMH batteries which is very impressive too.

The first drive - well lets say this drives exactly like the videos show. As a trail companion it is probably perfect, mixing a bit of crawl, a bit of trail and a bit of bash equally well.
Posted by KristofferR | Mar 07, 2018 @ 03:07 PM | 2,317 Views
The Stampede is a good truck but one of several things I wish Traxxas would adress is the rear body post design. I have three of these bodies and they all crack, quickly and in the same place.

A bit of google work led me to an excellent test at rctech by MailManX.

https://www.rctech.net/forum/paintin...ny-photos.html

1-2 layers of drywall tape and a liberal smearing of Shoe-Goo (ventilate, ventilate!!) and the crack propagation should stop.

I got my drywall tape at ClasOhlson, the ShoeGoo at CDON (GåBra.se). ClasOhlson is a hardware store and CDON is a portal like Amazon. Now just have to find an equivalent to ”rubberized undercoating” in Sweden....
Posted by KristofferR | Feb 25, 2018 @ 02:35 PM | 2,607 Views
On the CC01, there is a screwed down plastic shelf that holds the ESC and receiver, as well as holding the battery pack in place. The reduction gear installation meant there was less space for the battery. It could fit in theory, standing on edge.

Removing the shelf and cutting it in two parts before screwing it back on provided shelves and space for a mid mounted battery. A forward dual strap mount is available too. Now my CC01 is capable of holding up to three 2200mAh LiPO:s in parallel which should provide a long runtime.

The LED installation is finished and the cables are held with hot glue and the interior fits nicely using the Tamiya-supplied pads and velcro.

Lastly, the crawler wheels are a little too big and to use them requires some mods.

Next up is weathering of the bodyshell. The plan is to use ”dust” in form of eyeshadow and layer of flat clear PS-55 paint. Painting my two Stampedes truck beds served as practice and resulted in a too flat finish for the Pajero.
Posted by KristofferR | Feb 20, 2018 @ 03:18 PM | 2,941 Views
After watching some Youtube tutorials I realized that 1/ those people are completely amazing model builders and 2/ I lack the patience and motivation to try to reach that level.

I picked up some tricks and then embarked on my typical impressionist spree, using paint, brush, toothbrushes, Brillo pad, knife blades, tiny screwdrivers. various marker pens and makeup powder.

Various stickers finished the job, the part numbers and Japanese text from the CC01 ended up on the co-drivers pad!

So far I was ”done” twice but could not resist another go so this is the result as of now. It became more fun the further I got so I can understand the appeal of painting figures and dioramas!

Search words:
Tamiya
Hop Up Parts
rally interior
CC01 Pajero
Posted by KristofferR | Feb 19, 2018 @ 01:37 PM | 3,066 Views
The last few days I got around to painting the rims. I was not happy with the stock tires and wheels, and not really happy with my Dremel job.

At Banggood I found a set of crawler-wheels on five spoke wheels that had the ”right look” and after painting the rims white I think they will do fine.

Next up was the interior. I ordered a bunch of Tamiya X paint cans and used a cheapo brush. After an hour it looked pretty good from afar, now it can dry and I will do another layer or two and then move to detailing.
Posted by KristofferR | Feb 12, 2018 @ 01:58 PM | 3,266 Views
I gave my kid a set of Trenchers for her birthday. They were used, but in very good condition.
We went out bashing and trailing in the snow. The cars really packed up heavy with snow and slush. The Trenchers were a lot better than the original tires on my truck.

When I hosed off the cars afterwards I ran the motors at max with the wheels in the air to empty the tires of water - I always punch opposing holes in the tires. Then the motor seized abruptly. This is running 2s on the beginner mode....

I opened it and the rotor was cracked. Options? New rotor is within budget, but maybe the case and windings are dead. No guarantee, cause I got the motor used, and in fairness it might have been punished on 3s.
Posted by KristofferR | Feb 10, 2018 @ 11:34 AM | 4,462 Views
I am torn. On one hand, the ability to handle absurdly steep rocks and tricky lines was super fun. Driving ”transport” at 4km/h was super boring. The car looks awesome - in my eyes at least. More time and driving needed, and I am waiting for some better tires than the stock Rally ones. But I suspect I am a basher at heart.
Posted by KristofferR | Feb 09, 2018 @ 11:59 AM | 3,777 Views
I started cutting and trial fitting the Tamiya Hop-Up interior to the Pajero. It looks awesome even unpainted.

Next action is to order some paint; I use ”dinominhobby.se in Borås, Sweden and will use Tamiya XF paints.

Plan. Overalls yellow, harnesses blue, helmets white and a black background. White would be more accurate but it will not look good. Undecided about white, yellow or black roll cage so far.

I have never painted an interior before so next is youtube and reading up on painting tips.