Search: Posts Made By: BobH
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09-18-2018, 08:51 PM
Replies: 4,197
Views: 643,820
Posted By BobH

Sounds like you may have an air leak? If the...

Sounds like you may have an air leak? If the engine runs with the choke engaged its getting O2 from some place. If you advance the throttle you lose RPM because you don't have enough air for it to...
09-17-2018, 05:51 PM
Replies: 2
Views: 167
Posted By BobH

I suppose you could make your own. Shouldn't be...

I suppose you could make your own. Shouldn't be awfully difficult. A few hinges and an actuator. The actuator could be mechanical or pneumatic.
On the other hand it may be a level of detail...
09-12-2018, 12:56 PM
Replies: 4,197
Views: 643,820
Posted By BobH

The vacuum is actually in the crank case. The...

The vacuum is actually in the crank case. The pulse (change in pressure) is transfered to the carb and that is what moves the inlet needle.. Both diaphragms move in concert. One moving in the...
09-10-2018, 08:47 PM
Replies: 4,197
Views: 643,820
Posted By BobH

Well I hope it all works out ok for you. I have...

Well I hope it all works out ok for you. I have the same pump but its going on an Evo 160 Radial.. I hope it works ok!.
09-10-2018, 06:14 PM
Replies: 4,197
Views: 643,820
Posted By BobH

There are two diaphragms in the walboro carb. One...

There are two diaphragms in the walboro carb. One on the top and one on the bottom. The one acts like a pump and pushes fuel to the other side of the carb where the inlet needle valve lets the fuel...
09-10-2018, 11:08 AM
Replies: 4,197
Views: 643,820
Posted By BobH

What causes the diaphragm to move is the change...

What causes the diaphragm to move is the change in air pressure in the crank case. That's on walboro carbs. To my way of thinking the pump is there to supply fuel to the carb, The carb should do...
08-26-2018, 06:58 PM
Replies: 9
Views: 568
Posted By BobH

I don' t think that's true at all.. Darrell IS a...

I don' t think that's true at all.. Darrell IS a friend of mine and I've made things for him. Still I too am waiting on Retracts for a Bates Wildcat for well over 2 years. So I wasn't put at the...
08-23-2018, 08:00 PM
Replies: 92
Views: 5,130
Posted By BobH

Great pictures sam . thank you!

Great pictures sam . thank you!
Forum: Glow Engines
08-17-2018, 08:45 PM
Replies: 2,361
Views: 232,289
Posted By BobH

The stock carbs, at least on the 770's have been...

The stock carbs, at least on the 770's have been problematic. Maybe the 735 has a different carb?
08-17-2018, 01:51 PM
Replies: 3,402
Views: 259,630
Posted By BobH

Woot! Looks good.

Woot! Looks good.
Forum: Glow Engines
08-17-2018, 05:40 AM
Replies: 2,361
Views: 232,289
Posted By BobH

My experience with the 770 is the stock carb...

My experience with the 770 is the stock carb isn't very good. Adjustment is poor and so is the throttle barrel setting.
My self and others have replaced the carbs with another brand and they work...
08-13-2018, 12:23 PM
Replies: 3,402
Views: 259,630
Posted By BobH

Chic, Nice work!

Chic,
Nice work!
08-11-2018, 11:33 AM
Replies: 3,402
Views: 259,630
Posted By BobH

Chic, Looks pretty good. Just a tip... By the...

Chic,
Looks pretty good. Just a tip... By the hinges add a little streak behind each one. Dirt collects around stuff on real planes and then leaves a tell tale mark.
08-05-2018, 01:52 PM
Replies: 3
Views: 229
Posted By BobH

I don't recall the airfoil used in Platts but the...

I don't recall the airfoil used in Platts but the Sis T has a pretty thick airfoil. That helps a lot with lift.
The SisT can be flown at over 30lbs safely.
08-01-2018, 06:54 PM
Replies: 9
Views: 568
Posted By BobH

Just saw Darrell at WOD in July. They are alive...

Just saw Darrell at WOD in July. They are alive and well. Please try again.
08-01-2018, 11:32 AM
Replies: 4,197
Views: 643,820
Posted By BobH

Contact Vogelsang Aeroscale. They service Mokis.

Contact Vogelsang Aeroscale. They service Mokis.
07-28-2018, 05:24 PM
Replies: 2
Views: 135
Posted By BobH

Contact Sierra Giant scale. He can make you one...

Contact Sierra Giant scale. He can make you one I'm pretty sure. He'll need the details etc.
07-26-2018, 06:45 PM
Replies: 19,270
Views: 1,928,868
Posted By BobH

Very Good write up. Congrats to you and your...

Very Good write up. Congrats to you and your family.
07-25-2018, 04:56 PM
Replies: 3
Views: 420
Posted By BobH

I built the JW Pup. It has similar construction...

I built the JW Pup. It has similar construction to the Albi. As mentioned its mostly tab construction and light ply wood.
It's not as Scale as the BUSA plane. JW does take a few liberties with...
07-20-2018, 05:28 PM
Replies: 3,402
Views: 259,630
Posted By BobH

Chic, Glad you are happy with the results....

Chic,
Glad you are happy with the results. Congrats :)
07-16-2018, 06:53 PM
Replies: 3,402
Views: 259,630
Posted By BobH

Im looking forward to seeing the results on the...

Im looking forward to seeing the results on the plane chic.
07-15-2018, 03:47 PM
Replies: 3,402
Views: 259,630
Posted By BobH

<div style="text-align:left;">Chic,<br />Glad to...

<div style="text-align:left;">Chic,<br />Glad to hear you made it., I left Friday night so that's the reason I didn't see you.<br />Good luck on getting the spray right.<br /><br /></div>
07-15-2018, 03:47 PM
Replies: 3,402
Views: 259,630
Posted By BobH

Chic, Glad to hear you made it., I left Friday...

Chic,
Glad to hear you made it., I left Friday night so that's the reason I didn't see you.
Good luck on getting the spray right.
07-15-2018, 12:24 PM
Replies: 3,402
Views: 259,630
Posted By BobH

Chic, An old trick is to cut come card stock in...

Chic,
An old trick is to cut come card stock in the shape of what you want. Then take masking tape and make a look so you have the sticky side on the outside all around. Then a few pieces on the...
07-08-2018, 10:33 AM
Replies: 2
Views: 160
Posted By BobH

I can't see how it would make any difference what...

I can't see how it would make any difference what air restrictors one used. Long ago we would use wheel collars and tighten the grub screws to restrict the air.
I would guess your assumption was...
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