Warp drive pitch Question

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Tribal Croc
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Warp drive pitch Question

Postby Tribal Croc » Tue Feb 22, 2011 11:25 am

Ok I need some advice

Using the Warp Drive Protractor setting it on the hub, using the build in spirit level I get the following readings 0 on inner white wheel and 5 on the outer

Now taking the protractor to the blade tips and again using the build in spirit level I get 0 on inner white wheel and 15 on the outer

So am I correct in saying that the pitch is 10 degrees?

At the moment my temps are going to 82 – 85 in the climb and about 80 in the cruise

Next question adjusting the blade tips to 0 on inner and 23 outer will this give me an 18 degree pitch?

Will increasing the pitch to 18 mean that the engine will not work as hard and will reduce the temps?
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Re: Warp drive pitch Question

Postby Willie » Tue Feb 22, 2011 1:14 pm

Hi Mr. Dundee
Wat belankrik is, is dat jy naby rooi lyn kom met opsteig (daar waar jou enjin maksimum krag lewer) en dat die grade wat jy ookal gestel op al die lemme dieselfde is. Sit jou trike in die hanger met agterwiel asse op bokkies sodat daar nie beweging is op die rubber bande nie. Neem nou 'n adstand van die punt van die skroef af bv. 100mm op elke lem en trek 'n reghoekige lyn met die trailing of leading edge. Sit 'n laser waterpas op daai stasie en skyn die straal teen die hanger se dak. Nou kan jy oor so groot afstand baie akuraat meet om al die hoeke dieselfde te kry. Wanneer jy die skroef boute vas maak moet die wringkrag dieselfde gestel word op die sleutel hefboom en die voorkant van elke lem moet gestel word om dieselfde pad te volg. Dus as jy 'n drom teen die skroef sit tot dit net raak, kan jy die skroef stel dat elke lem net raak deur die boute waar die lem meer raak bietjie stywer vas te draai. Die vergasser mengsel sal 'n groter verskil maak op die tempratuur as die werkverigting.
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Re: Warp drive pitch Question

Postby Tribal Croc » Tue Feb 22, 2011 7:48 pm

Dankie Willie

Ek het van middag weer gekyk en ek kry 6600rpm (static) so gaan more bietjie met die pitch speel en dit na so 15 grade vat en dan weer kyk

Sal laat weet

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Re: Warp drive pitch Question

Postby Gompou » Tue Feb 22, 2011 9:48 pm

Hello willie.
Die metode om die boude stywer te draai om die "tracking" reg te stel, is dit op die hub met die twee plate met die plastiek halfmaane of die soliede aluminuim hub.
Ek het 'n alu hub en dit maak nie werklik verskil aan my tracking nie.
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Re: Warp drive pitch Question

Postby Tribal Croc » Thu Feb 24, 2011 8:36 am

Ok did the changes to the warp drive and the t-est flight this morning revealed the following:

Before:
Prop pitch 10 degrees
Static RPM 6600
Cruise RPM 5300
Temperatures Low 80 High 90

After:
Prop pitch 15 degrees
Static RPM 6300
Cruise RPM 4700
Temperatures Low 70 High 82
Rate of climb 800fpm

Felt a bit of vibration so I will loosen all the bolts recheck pitch and re Torque and set the pitch at 14 degrees then it should be ok
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