Search found 17 matches

by Peter Withers
Sun Mar 28, 2021 5:48 pm
Forum: Universal Carrier
Topic: Do I............................
Replies: 7
Views: 362

Re: Do I............................

Do an ambulance, not that I'm biased of course...
by Peter Withers
Wed Mar 24, 2021 7:55 pm
Forum: Universal Carrier
Topic: Modified steering brakes
Replies: 18
Views: 837

Re: Modified steering brakes

My discs are shimmed to just miss the housing and even with full servo force I don't get any contact. The discs were a tight press fit on the threaded part anyway so there is little possibility of contact developing. Interesting on the drilled disc idea, it did cross my mind. Some while ago my 1/6th...
by Peter Withers
Wed Mar 24, 2021 7:18 am
Forum: Universal Carrier
Topic: Modified steering brakes
Replies: 18
Views: 837

Re: Modified steering brakes

Mike, have you retained the original servo linkages in your setup?

Thanks,
Pete W
by Peter Withers
Sun Mar 21, 2021 8:36 pm
Forum: Universal Carrier
Topic: Modified steering brakes
Replies: 18
Views: 837

Re: Modified steering brakes

Hi Peter, Just seen Viton on Ebay, what thickness did you use ? Would it be advisable to remake the shoes in steel ? Dennis. The piece I had was around 2mm thick, it was probably an offcut from work (I design equipment for the oil industry, viton is a favourite for O rings etc). I personally was ha...
by Peter Withers
Sat Mar 20, 2021 7:00 pm
Forum: Universal Carrier
Topic: Modified steering brakes
Replies: 18
Views: 837

Re: Modified steering brakes

More progress on UC 64 (the Ambulance) and the steering brakes. I now have removed the screws from the discs, added some friction material to the brake shoes, bedded in the diff (as recommended by Armortek) and it all works! I have reliable steering. The motor is still struggling slightly but some o...
by Peter Withers
Fri Mar 19, 2021 10:45 am
Forum: Universal Carrier
Topic: Armorpax's Armortek UC - No.18
Replies: 131
Views: 11414

Re: Armorpax's Armortek UC - No.18

It looks like a nice solution to the problem of the sprockets not meshing well with the tracks when they are under tension due to the loose fit of the split pins (as someone above alluded to). I'm pondering making new sprockets with wider pitch which will be fiddly but doable with my small lathe and...
by Peter Withers
Thu Mar 18, 2021 11:47 am
Forum: Universal Carrier
Topic: Modified steering brakes
Replies: 18
Views: 837

Re: Modified steering brakes

Peter, With regard to the screws holding the back axle in, I reversed mine so the nuts were on the inside and I drilled a small hole in the drive sprocket level with the cap heads so I could use and allen key from the outside. The cap heads can't be seen anyway as they are behind the drive sprocket...
by Peter Withers
Thu Mar 18, 2021 10:01 am
Forum: Universal Carrier
Topic: Modified steering brakes
Replies: 18
Views: 837

Re: Modified steering brakes

Peter - instead of changing to ball diffs (which will probably not be able to handle the torque - or if they can, will require frequent maintenance) either run the diff on a power tool to loosen it up or change the viscosity of the grease in the diff. OK, thank you for the advice, particularly on t...
by Peter Withers
Thu Mar 18, 2021 7:31 am
Forum: Universal Carrier
Topic: Modified steering brakes
Replies: 18
Views: 837

Re: Modified steering brakes

I finally tested my brake setup over the last couple of days. The first test was a failure, the tracks were too loose. I took 2 links out either side (I'm now about 8 links less than the number specified in the build documentation!) and on the second try everything worked a treat. The main issue is ...
by Peter Withers
Tue Mar 16, 2021 1:06 pm
Forum: Universal Carrier
Topic: Modified steering brakes
Replies: 18
Views: 837

Re: Modified steering brakes

When I raced 1/8th scale IC cars the brakes we used were a brake pad material with 2 steel plates either side of the disc operated by a cam and considering we were doing up to 70 mph I never had to replaced the disc or the pads. I would like to do something similar but there's not a lot of room. I ...
by Peter Withers
Tue Mar 16, 2021 1:05 pm
Forum: Universal Carrier
Topic: Modified steering brakes
Replies: 18
Views: 837

Re: Modified steering brakes

Like it. Looks good. :D :idea: 8) What are the chances of adding a transverse drive rod to control the other brake from the single servo? I saw a chap on YouTube cut a model race car brake pad from a grinder slitting disk. I thought super idea to make a thin grippy pad to attach to the brake disk.....
by Peter Withers
Mon Mar 15, 2021 8:15 pm
Forum: Universal Carrier
Topic: Modified steering brakes
Replies: 18
Views: 837

Modified steering brakes

More news on UC no. 64, the ambulance. Having partially installed the motion kit I discovered that without a more sophisticated transmitter than my Spektrum DXe I was going to run into problems with the servos stalling as they tried to move the brake mechanisms past their mechanical limits. So a new...
by Peter Withers
Sun Mar 07, 2021 7:30 pm
Forum: Universal Carrier
Topic: Universal Carrier Ambulance
Replies: 8
Views: 643

Re: Universal Carrier Ambulance

Progress so far on the ambulance conversion, side panels modified and first stretcher rails temporarily located. I used a bit of artistic licence on the towing eyes having removed the existing ones. Rear steps will be added and the stretcher rails fitted on both sides.
by Peter Withers
Fri Mar 05, 2021 1:08 pm
Forum: Universal Carrier
Topic: Receiver Location
Replies: 1
Views: 119

Receiver Location

What is the best location for the receiver in the UC? I'm about to start installing the electrics and would like to get this in the right place to start with. My receiver is a Spektrum AR410 (at the moment, soon to be upgraded to AR620). These have internal antennae, no aerial wires sticking out. I'...
by Peter Withers
Tue Mar 02, 2021 7:19 am
Forum: Universal Carrier
Topic: Universal Carrier Ambulance
Replies: 8
Views: 643

Re: Universal Carrier Ambulance

OK Robert, you get your wish. Mine is being built as per the second photo above!