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Weston Capiche 50cc Build

Weston UK Capiche 50cc with AMG-55 Engine

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Gary Manuel08/02/2018 16:08:15
1705 forum posts
1492 photos

I was lucky enough to get an AGM-55 petrol engine for Christmas. Totally unexpected and I had no plans of building another model of this size. After much head scratching and scraping of pennies, I decided to put it in a Weston UK 50cc airframe.

There is very little information about this model available on the internet. I have not been able to find a single build blog, so I will be very much working in the dark.

The box it comes in is massive .....


..... but it might come in handy at a later date.


My first step is buy all the bits I'm going to need to build it. I've got most of it as listed below. The only bits I haven't got yet yet are a decent spinner and I need to check what length engine stand-offs I'll need.

The cowl is pre-drilled for the fixing screws, which pre-determines what the total engine length needs to be. I was surprised to find that the kit is supplied with a set of four x 50mm stand-offs. The engine comes with a set of 68mm stand-offs.

Temporarily fitting the cowl and measuring from the firewall to the front of the cowl gives a measurement of 167.5mm.


The engine with the AGM supplied stand-offs is 170.5mm, giving a clearance of 3mm from the cowl to the spinner back plate. That sound OK to me, so I don't need to order any more stand-offs.


A 90mm (3 1/2 inch) spinner will fit nicely, so I'll get one ordered.

Edited By Gary Manuel on 08/02/2018 16:11:09

Gary Manuel08/02/2018 16:26:49
1705 forum posts
1492 photos

It will be fitted with this rather nice Genesis Canister exhaust system supplied by Weston UK.


Servos will be Hitec HS-7955TG (24Kg 0.15s @ 6V) on the Rudder and two Elevator halves and Hitec HS-7985MG (12.4Kg 0.13s @6V) on Ailerons and Throttle each on their own receiver channel. The 7th channel will drive a Rcexl Mk2 kill switch.

Receiver will be a JR RD922 DSM2 PowerSafe system using 3 satellites, failsafe switch and 2 redundancy power supplies.

Both receiver batteries will be 2100mAh 30C 2 cell LiFePO4 batteries.

Ignition will be powered by a , a 2100mAh 30C 2 cell LiFePO4 via an AGM heavy duty switch and Rcexl kill switch.

The Capiche looks to be fairly standard construction but unusually has pull-pull control on rudder and seperate elevator halves.


Edited By Gary Manuel on 08/02/2018 16:28:36

ken anderson.08/02/2018 16:46:45
8068 forum posts
729 photos

teeth 2 nice photo of the box there Gary..

ken dept.

john stones 108/02/2018 16:51:49
9676 forum posts
1435 photos

Love your box picy. face 1

Bob had a big Capiche, not sure if it was 50cc.

Martyn K08/02/2018 16:58:32
4611 forum posts
3217 photos

I love these big builds. Following.

I can imagine that if I cam home with one of these, i would be placed inside said box with the contents inserted where the sun don't shine..

Adrian Smith 108/02/2018 17:31:33
1932 forum posts
654 photos

Glad to see you took the plunge with the 50cc Capiche, Gary. If it flies anything like the two smaller versions from Weston you will not be disappointed! I had the Capiche 140 (still got it) and it is brilliant the way you can throw it around. Plus pound for pound it is the best value around for a 50cc aircraft. I am tuned in matey yes

Gary Manuel08/02/2018 18:11:31
1705 forum posts
1492 photos

Carbon fibre spinner ordered.

Gary Manuel09/02/2018 17:27:53
1705 forum posts
1492 photos

One thing that kept niggling me was that the firewall and the cowl are pre-drilled, resulting in there being no adjustment of the engine mounting position. I was concerned about whether the engine mounting holes would be in the right position on the firewall for my engine and whether the engine prop shaft would be in the centre of the cowl opening. I just had to try it before starting the build proper.

Engine loosely fitted to the firewall using the AGM supplied stand-offs.


It sort of fits, but doesn't quite feel right. The holes in the firewall appear to be slightly too close together, resulting in the stand-offs angling inwards.


The stand-offs are not quite flush at the firewall. This is something I'll need to sort out later to avoid putting unnecessary forces onto the engine mounting lugs. It looks like some or all of the holes in the firewall will need elongating a little.


It will be OK for now to allow me to check the fit at the front of the cowl though.

The engine sits nicely within the cowl without touching at any point.


Looks like it's bang on.


Perfectly on the centre line .....


.... and the clearance between cowl and prop driver is as expected. Happy with that.


Edited By Gary Manuel on 09/02/2018 17:29:21

Rich too10/02/2018 07:00:58
2727 forum posts
1020 photos

Nice one Gary, sub’d.

Adrian Smith 110/02/2018 11:46:00
1932 forum posts
654 photos

What was the courier charge, Gary if I may ask?

Gary Manuel10/02/2018 12:39:36
1705 forum posts
1492 photos
Posted by Adrian Smith 1 on 10/02/2018 11:46:00:

What was the courier charge, Gary if I may ask?

I bought it directly from Weston UK, who do free delivery on orders over £200.

See PM Adrian.

Adrian Smith 110/02/2018 15:19:17
1932 forum posts
654 photos

Thanks, Gary. I have PM you back. Adrian

Gary Manuel10/02/2018 17:06:10
1705 forum posts
1492 photos

I've been a bit busy today, so I've not actually "done" anything, but I did have a look at the engine box area with a view to planning ahead for battery / ignition / canister fitting at a later date.

Everything looks well - in fact I am really impressed at how much thought has gone into the design.

On every other model I've owned, the engine box is symmetrical along the vertical axis of the fuselage. This means that the engine has to be offset to the port side to compensate for the right thrust in order that the prop shaft exits the cowl on the vertical centre line.

Weston have gone to the trouble of offsetting the entire engine box and mounting the engine exactly in the centre of the firewall. This results in much more space being available on the starboard side of the engine box for equipment mounting. Nice one Weston!





iqon10/02/2018 18:35:03
1364 forum posts
238 photos

You want a pillow ?wink

Gary Manuel10/02/2018 19:43:36
1705 forum posts
1492 photos
Posted by iqon on 10/02/2018 18:35:03:

You want a pillow ?wink

Won't be of much use to me once I'm in a box.

Edited By Gary Manuel on 10/02/2018 19:52:01

Tom Sharp 210/02/2018 21:22:12
3021 forum posts
16 photos

is that paint on your trousers or something more exotic. laugh

cymaz10/02/2018 21:27:30
7694 forum posts
987 photos

Watching !!

Gary Manuel10/02/2018 22:43:07
1705 forum posts
1492 photos
Posted by Tom Sharp 2 on 10/02/2018 21:22:12:

is that paint on your trousers or something more exotic. laugh


Adrian Smith 111/02/2018 12:03:02
1932 forum posts
654 photos

Does the Capiche 50cc have a carbon fibre U/C, Gary? My old Capiche 140 has a dural type U/C and apart from bending the paint was not really practical after a while.

Looking at the engine box pictures you post I would say it would lend itself well to an electric conversion. Something I might consider at some point.

Gary Manuel11/02/2018 13:38:57
1705 forum posts
1492 photos

Yes Adrian - Main undercarriage is a nice quality single piece aerofoil section carbon affair. Tail wheel assembly is also carbon fibre.

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