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Search: Posts Made By: aj0nr
Showing results 1 to 25 of 27
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Forum: Engine Conversions
03-15-2009, 10:21 PM
Replies: 653
Views: 104,721
Posted By aj0nr

RE: another darn ryobi post (ryobi performance modification, analysis and comparison)

The Radio Shack magnets DID work fine .ie-the XYZ EI.I was also using 6volts with no problem.
Forum: Engine Conversions
03-15-2009, 08:47 PM
Replies: 653
Views: 104,721
Posted By aj0nr

RE: another darn ryobi post (ryobi performance modification, analysis and comparison)

I was planning to get a static thrust reading but the batterys were dead in the scale.I was getting dark, and needing to get cleanned up.There is always tomarrow.
Forum: Engine Conversions
03-15-2009, 08:16 PM
Replies: 653
Views: 104,721
Posted By aj0nr

RE: another darn ryobi post (ryobi performance modification, analysis and comparison)

I have a referance test engine working now.
A very clean stock single ring piston,large case long shaft,with a small 8mm carb that was also cleanned up,and a 2 runner port head.It has about 5 for...
Forum: Engine Conversions
03-13-2009, 10:42 PM
Replies: 653
Views: 104,721
Posted By aj0nr

RE: another darn ryobi post (ryobi performance modification, analysis and comparison)

Read some of this site on the reeds.They are useing differant designs.

http://rcshowcase.com/html/faq.html

Look at the rotary reed valve
Forum: Engine Conversions
03-10-2009, 07:11 PM
Replies: 653
Views: 104,721
Posted By aj0nr

RE: another darn ryobi post (ryobi performance modification, analysis and comparison)

Combatpilot-
I sent of a box this morning.I put a regular head in it.Did you want one with a slit in it too?
Forum: Engine Conversions
03-09-2009, 11:21 PM
Replies: 653
Views: 104,721
Posted By aj0nr

RE: another darn ryobi post (ryobi performance modification, analysis and comparison)

I have been seeing that the Walbro WT-257 is the one for boats.

Is it overkill for the planes ??
Forum: Engine Conversions
03-08-2009, 11:33 PM
Replies: 653
Views: 104,721
Posted By aj0nr

RE: another darn ryobi post (ryobi performance modification, analysis and comparison)

Has anybody messed with the intake runner ?
In race cars,they change the runner lenght and/or volume to increase the Hp or torque band.

I seen an ad for a 26cc 2-stoke set up for marine...
Forum: Engine Conversions
03-08-2009, 11:05 PM
Replies: 653
Views: 104,721
Posted By aj0nr

RE: another darn ryobi post (ryobi performance modification, analysis and comparison)

I have some zama and walbro that are larger than what you have talked about.

Inlet 8.25 mm,Outlet 13.92mm . This is a zama.
In 8 mm, out 14.25 mm -Walbro WT57 10/86
Some others smaller and...
Forum: Engine Conversions
03-08-2009, 09:47 PM
Replies: 653
Views: 104,721
Posted By aj0nr

RE: another darn ryobi post (ryobi performance modification, analysis and comparison)

I found a web site on the walbro carbs that is a good read.

http://tech.flygsw.org/walbro_tuneup.htm
Forum: Engine Conversions
03-08-2009, 07:10 PM
Replies: 653
Views: 104,721
Posted By aj0nr

RE: another darn ryobi post (ryobi performance modification, analysis and comparison)

Does anybody know which carb are the " magical one" is? Walbro or Zama , if there are # you have that could help.
Forum: Engine Conversions
03-08-2009, 05:47 PM
Replies: 653
Views: 104,721
Posted By aj0nr

RE: another darn ryobi post (ryobi performance modification, analysis and comparison)

If anybody is trying to find bigger carbs,try looking for them on Homelites and McCulloch.The ones I have are a little bigger than those on the Ryobis'.I have a really big one from a Stihl chainsaw...
Forum: Engine Conversions
03-08-2009, 05:37 PM
Replies: 653
Views: 104,721
Posted By aj0nr

RE: another darn ryobi post (ryobi performance modification, analysis and comparison)

Has anybody has looked at the DA-50cc ,rear intake.Look closer,very small crank case. ??? Just makes you think.
Forum: Engine Conversions
03-08-2009, 05:34 PM
Replies: 653
Views: 104,721
Posted By aj0nr

RE: another darn ryobi post (ryobi performance modification, analysis and comparison)

Combatpilot-
racingrc14 is correct on the total stroke length. I had a typo.I was trying to measure the crank pin center to piston pin center to see if there was something I was missing.
Forum: Engine Conversions
03-08-2009, 10:16 AM
Replies: 653
Views: 104,721
Posted By aj0nr

RE: another darn ryobi post (ryobi performance modification, analysis and comparison)

[:-]All the rod,pistons,top of pistons to wrist pin are the same.All of them can change out.The only head that is more differant is the 2 slot with comp releif cuts.The small case hits , but the...
Forum: Engine Conversions
03-08-2009, 01:51 AM
Replies: 653
Views: 104,721
Posted By aj0nr

RE: another darn ryobi post (ryobi performance modification, analysis and comparison)

OK. something started to bug me,so I got the digital mic out and started to measure everything again.
I have 1 that is differant.The piston is 1.306 in. It came from the small case.It is 2.0615...
Forum: Engine Conversions
03-06-2009, 11:29 PM
Replies: 653
Views: 104,721
Posted By aj0nr

RE: another darn ryobi post (ryobi performance modification, analysis and comparison)

Combatpilot-
I have several cranks and carbs that might interest you if you would need one.
Forum: Engine Conversions
03-06-2009, 11:24 PM
Replies: 653
Views: 104,721
Posted By aj0nr

RE: another darn ryobi post (ryobi performance modification, analysis and comparison)

Tell me what you need and an address to send to and you will get it.

This is getting verry interresting, Please dont stop testing.I have been trying to do this for a while.You have sparked my...
Forum: Engine Conversions
03-02-2009, 10:47 PM
Replies: 653
Views: 104,721
Posted By aj0nr

RE: another darn ryobi post (ryobi performance modification, analysis and comparison)

The troy also has the cast-in mag shield.
Another # would be TB65SS
Forum: Engine Conversions
03-02-2009, 10:44 PM
Replies: 653
Views: 104,721
Posted By aj0nr

RE: another darn ryobi post (ryobi performance modification, analysis and comparison)

Troybuilt TB20CS 31cc It has 2 rings 4 ports and long shaft
Forum: Engine Conversions
03-02-2009, 10:24 PM
Replies: 653
Views: 104,721
Posted By aj0nr

RE: another darn ryobi post (ryobi performance modification, analysis and comparison)

Check this out Ebay item # 120386237567 41.5cc RedMax Zenoha??
Forum: Engine Conversions
03-02-2009, 09:07 PM
Replies: 653
Views: 104,721
Posted By aj0nr

RE: another darn ryobi post (ryobi performance modification, analysis and comparison)

I am also interrested in the Ryobi.I have been working on then for awhile.I ordered a conversion kit a long time ago.It was the cost of the EI units that kept me from going further with it.Now that...
Forum: Engine Conversions
03-02-2009, 08:23 PM
Replies: 653
Views: 104,721
Posted By aj0nr

RE: another darn ryobi post (ryobi performance modification, analysis and comparison)

The 2 ring one that I found was on a Troybuilt/MDT with a date stamp of March 15 2006.It was stamped on the head.It was also a long shaft.
Showing results 1 to 25 of 27
 
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