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MT 35 Looks Like a Winner

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Old 04-21-2010, 11:50 PM
  #201
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Default RE: MT 35 Looks Like a Winner

you could always make the pipe fit the header by dropping it down just a bit...
I guess you would have to bend the header back but it would solve your problem..
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Old 04-22-2010, 12:14 PM
  #202
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Quote:
ORIGINAL: PlaneKrazee

Take the cylinder off and flush the crankcase out with two stroke mix a few times and see what comes out.
Does the bottom of the cylinder have a chamfer to allow the piston and piston ring to be re-inserted easier? Is the piston ring free floating or is there an anti-rotation stop?
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Old 04-22-2010, 01:50 PM
  #203
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Default RE: MT 35 Looks Like a Winner

Pinned ring, I think it's chamfered. Only takes a few seconds after you've done it a couple times.
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Old 04-29-2010, 07:01 AM
  #204
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Default RE: MT 35 Looks Like a Winner

I advanced the timing all the way to 35 degrees and the motor runs much smoother and starts much easier. However, it is only spinning the Vess 19A at 6750.

Whats up?

I see that it should be in the around 7700. I spent a morning tuning it and 6750 was the best I could get out of it.



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Old 04-29-2010, 05:13 PM
  #205
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Quote:
ORIGINAL: tele1974

I advanced the timing all the way to 35 degrees and the motor runs much smoother and starts much easier. However, it is only spinning the Vess 19A at 6750.

Whats up?

I see that it should be in the around 7700. I spent a morning tuning it and 6750 was the best I could get out of it.



That makes no sense. The engine should be labored and wanting to backfire at high rpm with that advance. Send the engine back and have them fix it or give you another.

Send me a pm with your phone number.
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Old 04-30-2010, 06:03 PM
  #206
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Default RE: MT 35 Looks Like a Winner

I told Tomy that I would like to send it for service and he suggested that I advance the timing and try a different plug.

I sent another email with a request for service.

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Old 04-30-2010, 09:51 PM
  #207
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Default RE: MT 35 Looks Like a Winner

Contact Jack at mtenginesusa.com. The rpm figures I got, you and everyone else should get with a couple hundred rpm. Send it back if there is a problem and they can fix it, replace the reeds with fiberglass or whatever. It has a two year warranty, right? The metal reeds do spit fuel out the carb for sure. I installed a velocity stack from the get go so I have no comparison without one.

It is not up to you to get the engine running properly if there is truely a problem with the engine it's self, it is up to the manufacturer.
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Old 05-01-2010, 12:35 AM
  #208
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Default RE: MT 35 Looks Like a Winner

Right on.... I emailed the service department at MTengines.
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Old 05-01-2010, 05:03 AM
  #209
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Default RE: MT 35 Looks Like a Winner

6750 - fairly decent #
7700 - i think we are asking too much
thx
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Old 05-01-2010, 06:43 AM
  #210
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Default RE: MT 35 Looks Like a Winner

.
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Old 05-01-2010, 03:58 PM
  #211
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Default RE: MT 35 Looks Like a Winner

Weather: 100% humidity, temp 46 degrees. Stock exhaust. The engine has about 3/4 gallon thru it now.

APC18X6W 8300
APC 19x8W 7250
Bolly Carbon 18x10 8000
Bolly 16.5x10 3 blade 7700
Mejzlik 19x8 7400
Mejzlik 20x6 8000
Mejzlik 20x8 7000
Vess 19A 7630

Based on the rpm of the APC 18x6W this engine is not a revver but a puller.

I set the timing to 28* BTDC and flushed the engine of crud before running. If you are not getting close to these numbers there is something wrong.

These figures are all down a couple hundred rpm from a DLE 30 but the 35 weighs a little less and is beam mount.
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Old 05-02-2010, 05:42 PM
  #212
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Default RE: MT 35 Looks Like a Winner

Of course the numbers are just that and are going to vary with different wood species...  but a thousand?   I'm done monkeying.
Its going to Jodi tomorrow.  
I'll let Dr. 2 cycle figure it out now.   Who knows maybe it just has a case of the "crud".   I hear its going around.
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Old 05-02-2010, 08:57 PM
  #213
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Default RE: MT 35 Looks Like a Winner

The problem with prop numbers is not everyone uses the same prop, with the execption of the Vess 19A , the props listed above are rarely seen on engines this size. Very few people buying a $280 engine will spend $60+ on a prop.
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Old 05-06-2010, 05:42 AM
  #214
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Default RE: MT 35 Looks Like a Winner

This thread seems being quieta lot.To put something new here..
The new canister for MT35.
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Old 05-06-2010, 06:07 AM
  #215
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Default RE: MT 35 Looks Like a Winner

The APC 19x8 costs about $22.00 but my guess is the Vess will provide the best in-flight performance for sport flying. The Bolly 18X10 three blade I ran would be the best on a warbird. Too bad they are no longer made. One thing is for sure, to break a Bolly you would also destroy the engine.

Is MT going to replace the reed on new engines with a different material?
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Old 05-06-2010, 06:09 AM
  #216
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Default RE: MT 35 Looks Like a Winner

What about a flex header?
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Old 05-06-2010, 06:50 AM
  #217
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Default RE: MT 35 Looks Like a Winner


Quote:
ORIGINAL: PlaneKrazee
The APC 19x8 costs about $22.00 but my guess is the Vess will provide the best in-flight performance for sport flying. The Bolly 18X10 three blade I ran would be the best on a warbird. Too bad they are no longer made. One thing is for sure, to break a Bolly you would also destroy the engine.

Is MT going to replace the reed on new engines with a different material?
Quote:
ORIGINAL: PlaneKrazee


What about a flex header?

I've always found that a Prop works MUCH better than a flex header when bolted to the front of the engine
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Old 05-06-2010, 07:14 AM
  #218
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Default RE: MT 35 Looks Like a Winner

Flex header for MT35 new canister is similar with the picture but some are improved.
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Old 05-07-2010, 04:56 PM
  #219
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Default RE: MT 35 Looks Like a Winner

Another MT-35 runs.

Those new Xoar 19 X "3DA" props arrived from Valley View RC in a dented, bent and busted mailing tube but the props were undamaged. The props were obviously strong enough to prevent the U.S. Mail from breaking the tube completely apart.

Initially the engine was difficult to start because it would not draw fuel but it popped and spun the prop loose after I squirted gas in the carb. After squirting gas in it a couple of times it fired up and continued running. Before I was chased indoors by mosquitoes, thunder and rain I managed to get the max speed up to a "blazing" 4300 rpm and idle speed down to 2400 rpm after many needle valve adjustments and a tank of gas.

The following day I started all over by resetting both needle valves to 1 1/2 turns open and choked the engine. This time the gas came up in the line and flowed to the engine. Also, the compression was much better than the day before when it seemed to have a leaky piston ring. It surprised me by roaring to life on one flip of the prop.
With just a few needle adjustments, max speed went to 7000 rpm and idle was 2000 rpm (it idled at 1700 rpm but not reliably). It shakes a good deal more than the MVVS 26cc that it replaced. I'm using regular gas at 32:1 with Mobil Racing 2T synthetic oil.

I would have taken it to the field to break it in while flying it but the winds were too high, just as they have been for weeks.
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Old 05-07-2010, 07:19 PM
  #220
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Default RE: MT 35 Looks Like a Winner

Do I have to ship them in a safe? SHEESH!
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Old 05-08-2010, 04:33 AM
  #221
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Default RE: MT 35 Looks Like a Winner

Just armored cars!

That one looks like it went through the Detroit post office. If it was three weeks late and busted up, it went through Detroit!

Yes, even if its only supposed to stay west coast, it might make it through Detroit, they have a way!!
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Old 05-08-2010, 09:56 PM
  #222
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Default RE: MT 35 Looks Like a Winner

Mine should be at Valley View by now.  I hope you find something wrong with it Jody.     If not, I hope you find something wrong with the operator .

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Old 05-09-2010, 01:18 AM
  #223
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Default RE: MT 35 Looks Like a Winner

It's here Patrick, I'll find something I'm sure, I'll get into it this week.
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Old 05-09-2010, 08:29 PM
  #224
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Default RE: MT 35 Looks Like a Winner

hello PlaneKrazee, did you get my p.m. ?
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Old 05-09-2010, 08:35 PM
  #225
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Default RE: MT 35 Looks Like a Winner

A6TEXAN,

I did.
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