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Old 05-07-2019, 11:10 PM   #1
NEW222
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Engine Test Stand


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Hi all. So I have been wondering about an engine test stand. I am capable of building things, but was wondering if there was a cheap commercially available engine test stand. I would however prefer it to accept engines from .049 to .40(beam mounted engines), but in all honesty, something that would hold from .09 to .40 would do.. I have been using wood scraps in the past, but am now wanting something better than that. I too do not mind building something if plans are available. Or even a used stand if i came across one for the right price. It is looking like our weather is starting to improve and will be burning some nitro this year as I got a few engines to run in. Thank you.
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Old 05-08-2019, 08:41 AM   #2
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Re: Engine Test Stand

I made one out of some aluminum 2" box tubing an some 1 1/2" aluminum angle. The angle is installed inside the box tubing and is used to vary the size of the opening cut in the box tubing It is held in place with a 1/4" bolt through a slot in the box tubing. On the other side of the opening I attached a strip if aluminum on the inside so the engine would be level. I drilled and tapped the front of the aluminum strip and the aluminum angle to accept a 4-40 screw to go through the front bolt hole of the engine mount. I made a couple of strips of 1" angle to clamp the engine down.
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Old 05-08-2019, 09:13 AM   #3
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Re: Engine Test Stand

There are lots of different options and designs, some commercially available such as Model RC, PSP Manufacturing and others.

The problem I found with all of them is the requirement for adequate anchoring. This is just as critical, as you can see from this video:

[YOUTUBE]
[/YOUTUBE]

Some seem to like clamping to picnic table, etc. Works, but lacks elegance.

I fix my own and friends engines so finally figured I needed something to run the normal range we use up for testing and setup. My solution was to put this together. Self contained and portable. Often comes with me to the field to test engines since limited testing times at home, (next door neighbor works steady midnights).

Have run everything from Cox TD051 up to OS 160 twin, although those required adapters. The 160 twin in particular due to height and mounting differences. Everything else, all the way to YS 120's and Saito 150's have been tested on this. Could modify it for larger, but don't run gas and larger nitro becomes less likely due to fuel costs anyway.


I will try and take better pics of the clamp design as that is key to how it works.
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Old 05-08-2019, 10:44 AM   #4
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Re: Engine Test Stand

Gary;

You do build things with 'Style and Flair!'
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Old 05-08-2019, 11:12 AM   #5
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Re: Engine Test Stand

Here's a thread from rcgroups.com on engine test stands:
https://www.rcgroups.com/forums/show...0#post40025334

Scroll down to post #15 for a video on a fully adjustable test stand that you can either buy or make yourself.


I've made one and it wasn't difficult... the aluminum T-slot tracks and bolts are available from Lee Valley (and possibly big box stores) and a few square inches of aluminum or steel plate, along with some plywood and some hardwood for the engine blocks is what you need..... power woodworking tools beyond a drill would speed up the cuts but the slots for the T-slot tracks can be done with handsaw/chisel or formed by gluing together multiple layers of plywood. Slather on several coats of polyurethane for protection against the exhaust oil.
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Old 05-08-2019, 11:15 AM   #6
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Re: Engine Test Stand

Thanks. Love challenges like this and at the time had access to mills and other machines. Base is just a thick alloy plate left over from other projects.

Fabbed everything from 7075 since what was available and strong enough for most apps.

Forgot to mention since the TD in the first pic I moved the throttle over to the left side to avoid exhaust, which most commonly exits right side. Simple using bent rod and a couple of nosewheel steering collars running under the tank.

Same with the anchors. Originally made 4, but found just need 2 at the back. Added T" handles on the tops to aid in stepping on them to insert and pulling them back out of the ground. Pretty self contained.

All of this is just an example. Lots of the other ideas would work just as well.
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Old 05-08-2019, 05:34 PM   #7
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Re: Engine Test Stand

Thank you for the help and ideas. I had found one online that may just foot teh bill. Now to check out one more thing before pulling the trigger....
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Old 05-08-2019, 06:25 PM   #8
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Re: Engine Test Stand

These guys make some of the best universal test stands for the range you are looking for. Hobby shops in Canada used to carry them all the time but with all the electrics and foamies now days I guess it is not worth it ? They are great to deal with direct though.

http://www.jtecrc.com/engineteststands.htm
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Old 05-08-2019, 07:09 PM   #9
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Re: Engine Test Stand

Well, I just pulled the trigger and bought this one out of Great Britan. It looks very well made.
https://www.ebay.com/itm/Model-RC-Ae...IAAMXQGqJRF8nz
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Old 05-09-2019, 09:09 AM   #10
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Re: Engine Test Stand

I had looked at making something similar since it was relatively simple and inexpensive.

Again, recommend a good base for anchoring down.

Give us some pics when complete. You may inspire and help someone else looking for ideas.
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