e7se main gear

[giles]

the Synergy E7 SE Helical Cut Main Gear (121T) is out of stock everywhere uk and us. anyone know when they are going to be available again.?

[Darren Lee]

https://www.ebay.com/itm/Synergy-310-121-121-Tooth-Main-Gear/323281842262?hash=item4b45197056:g:3aUAAOSwIM9bEB8c

[giles]

thanks for that. Ending up finding one from midland helicopters

[alan]

Touched base with Matt. You can use the 119t E5 main gear as well. Adjust pinion size  as needed.
Cheers
Alan


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[giles]

thanks alan I will keep that in mind.

[colemn615]

Does Matt plan to create more 121 main gears? The 119 will add head speed which I do not want on my E7se.

[alan]

That Matt will need to answer.
Looking at the calculations the actual change in rpm seen at the main shaft will be 70-100 rpm depending on motor KV and pinion. Really not that big a deal. Tell me what you are currently running motor and pinion. Your ESC should be able to handle just running a slightly lower throttle percent.
Cheers
Alan


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[colemn615]

I run a little lower headspeed and shoot for 1800

I run a 4525 520kv with a 12t pinion. Will need to check my HW to see what percent I run on the gov. Mainly annoying is all.

[alan]

On the 121 main gear you would probably be at 73% and with the 119 you would see 70%. Not significant.
Ultimately if you were shooting for 1800 as your max headspeed a 450KV motor would have been more ideal 
Cheers
Alan


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