vasek

My Feedback: (4)

I want to order a stand 1/2A to .60 size from TH and they have two models > both made by J'tec

which one is better (practical)?

http://www3.towerhobbies.com/cgi-bin...?&I=LXR586&P=7

http://www3.towerhobbies.com/cgi-bin...?&I=LXR588&P=7

From what I can tell from the pics I like the second one better. Anyone has tried both of them?

Thanx, Vasek

BTW I will be using the stand for small Norvel engines and such BUT also for some powerful .60 size (Jett) engines
so it's gotta be sturdy!

flyinrog

My Feedback: (1)

The second one looks like a sturdier mount to me...Rog

eroc144

My Feedback: (1)

I haven't used either of them, but from a force - balance perspective the second one has a wider foot and would be inherently more stable. Of course the first one has nuts vs screws on the flanges, so it would be easier to torque them down. Then again, the second one...

geez, I dunno.

EG

gcb

One of the problems I have encountered with my test stands is that with a wing nut on top to tighten, there is not enough room left to install the muffler. For that reason, I usually use a home-made board mount for anything smaller than .15. Both of my commercial mounts are wood. One is an ancient E-Z Just from the fifties...still works fine.

Since the first one has the bolts facing nuts up (), I would pick the second one.

Of course if you break-in your engines without muffler, none of this applies.

George

GrahamC

I have an old Tatone metal adjustable mount much like the first one. It has served me well but is frustrating to use with small engines, especially with mufflers.

I am in the process of making a new one which will be more like the second one. I like the ideas of being able to tighten up the mount without bolts and nuts extending up in the way.

If I where to buy one or the other, I would buy the second one.

cheers, Graham

vasek

My Feedback: (4)

Thanks for helping out guys!

V.

AndyW

My Feedback: (1)

I had a Tatone mount and it worked well but not for anything smaller than a .15 so for the smaller engines I used a stock mount bolted to a board and that was secured to an old drill press vise.

However, the use of a massive, aluminum angle allowed me to modify the Tatone so that the clamps could be secured from underneath. The bottom of the bolt heads were dressed down to a ball shape that sat in a bowl shaped clamp. This provides clearance for small engines and also allows you to install your engine without having to take the muffler off.

The pictures should explain how it was done.

RocketRob

My Feedback: (1)

Roger muffler gets in the way....

Nicely done Andy!

digital_trucker

I still prefer the famous, immortal, and time-tested hunk-O-wood test stand (with a motor mount attached to it)

AndyW

My Feedback: (1)

Thanks Rob,

This thing has been solid and vibration free on up to a Norvel .40. Getting an engine in and out is a 20 second affair. When you bench run almost as much as you fly, it sure is convenient.

GrahamC

yes indeedy Andy, good idea. The pieces on top that secure the engine are still a little big for some of the small engines but easy to thin out or put more of an angle on to get some more clearance around mufflers.

I will give it some thought to modifying mine in a similar way. I may build the larger anyways as I have been messing about with larger engines of late as well.

I have been feeling a bit nostalgic and got a Carl Goldberg Senior Falcon to be powered with a not so nostalgic OS 55AX. I have a couple of other larger .65 engines including a .60 size diesel that will need a proper test stand too.

cheers, Graham

AndyW

My Feedback: (1)

Yes, it's OK for an .074 WITH a muffler extension. Otherwise, you have to leave the muffler off. And lately, I've worked mostly .074 and up. But some slim bolts and new clamps maybe made of steel would provide some needed clearance for the .049/.06 engines.

skaliwag

My Feedback: (1)

There is a machinist in UK making nice test mounts and selling then on the aution site.
This one is a bit on the big side but I have seen smaller ones that he has offered.

http://cgi.ebay.co.uk/Model-Aircraft...QQcmdZViewItem


http://cgi.ebay.co.uk/Model-Aircraft...QQcmdZViewItem

fritzke

My Feedback: (1)

This one sold by Richmond R/C up in Canada:
http://www.richmondrc.com/vma/storec...vma_ets120.htm
Or at least it's a good idea on how to build your own with a smaller mount.
Dave