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Old 10-08-2012, 07:13 AM   #3241
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Hi Grinder, do you think the clutch engagement point set to be earlier on small track with many corners? I know you normally set the engage point arpund 15,000rpm at your track, how do you define that engagement point.
I would adjust the engagement point to the level of grip. Usually on a small high grip track, I would use a strong clutch. On low grip, a softer clutch will limit wheelspin.

I have checked the shift point, and clutch engagement points with tachometers. Nova makes one that is very accurate. It's mechanical. I have also used audio tachometers over the years. They are not as accurate as the nova mechanical tachometer.

The use of a tachometer over the years has let me know what 6000, to 50,000 sounds like. You can also look at the tach exactly when it engages.
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Old 10-08-2012, 08:00 AM   #3242
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I would adjust the engagement point to the level of grip. Usually on a small high grip track, I would use a strong clutch. On low grip, a softer clutch will limit wheelspin.

I have checked the shift point, and clutch engagement points with tachometers. Nova makes one that is very accurate. It's mechanical. I have also used audio tachometers over the years. They are not as accurate as the nova mechanical tachometer.

The use of a tachometer over the years has let me know what 6000, to 50,000 sounds like. You can also look at the tach exactly when it engages.
How does that Nova tach work? Do you connect it to the motor somehow? Understand the clutch has been one of the hardest things to learn and anything that can help is worth it to get.
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Old 10-08-2012, 10:51 AM   #3243
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How does that Nova tach work? Do you connect it to the motor somehow? Understand the clutch has been one of the hardest things to learn and anything that can help is worth it to get.
It has a rubber tip, that you push against the end of the crank. It catches the 2.5mm screw that holds the clutch on. It spins the tach, the exact rpm of the engine. It can also be used as an optical tach.
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Old 10-10-2012, 12:10 PM   #3244
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Grinder,

Do you still modify Picco Torque .12? I did not see them in your normal inventory. What are your thoughts on this engine compared to your MM keep-on and RBM3.

Thanks!
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Old 10-10-2012, 01:32 PM   #3245
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Grinder,

Do you still modify Picco Torque .12? I did not see them in your normal inventory. What are your thoughts on this engine compared to your MM keep-on and RBM3.

Thanks!
My modified Picco Torque .12 makes comparable power to my other modified .12's. It's fast.

It is on my webpage. I must have been updating the site when you looked.
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Old 10-10-2012, 01:59 PM   #3246
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My modified Picco Torque .12 makes comparable power to my other modified .12's. It's fast.

It is on my webpage. I must have been updating the site when you looked.
Thanks! You make the meanest motors in the business!
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Old 10-10-2012, 02:03 PM   #3247
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One last quick question. Do you recommend the picco 2669 or the nova 2660 with the picco torque .12?
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Old 10-11-2012, 07:13 AM   #3248
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It has a rubber tip, that you push against the end of the crank. It catches the 2.5mm screw that holds the clutch on. It spins the tach, the exact rpm of the engine. It can also be used as an optical tach.
Yes thanks! I will buy one.
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Old 10-11-2012, 02:23 PM   #3249
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Dear Grinder

Does this running in procedure also goes for the REDS M7T ... it's a Picco based engine, and I want to go after engines wich is easy to break in.

Best wishes; Jens

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The M21, and XZR have similar power bands to each other after they are modified. The M21 has the edge on power over the XZR.

The M21, and XZR don't like to be run on the prop as long as some other engines. Heat the M21 up to 200F cover the head, and let it run on the prop at a low-medium rpm for no more than 500CC. Then put it in the car, gradually reach race tune over 5 to 10 tanks. The M21, and XZR are both much easier to break in than most engines.

A long, cold break in will damage the Picco M21 engine. Picco himself only runs a couple of tanks rich, then gradually reaches race tunes over the next few tanks.

The OS can be done the same way. I would not recommend this with most engine brands. Most engines need up to a .5 to 1 gallon of fuel, before you start leaning on them.
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Old 10-12-2012, 06:10 AM   #3250
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One last quick question. Do you recommend the picco 2669 or the nova 2660 with the picco torque .12?
Both pipes work well, but the Picco 2669 has the edge on power. It also fits the Picco engine better.
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Old 10-12-2012, 06:11 AM   #3251
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Dear Grinder

Does this running in procedure also goes for the REDS M7T ... it's a Picco based engine, and I want to go after engines wich is easy to break in.

Best wishes; Jens
Yes, the Reds M7T is the same. It is easy to run in like the other Picco based engines.
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Old 10-13-2012, 08:22 AM   #3252
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Dear grinder , just finish run in your modify keep-on 21 really love the the low end power .the power worth every drop of nitro . I'm using 2015 pipe with the 5 fin manifold ,can I use Rb 2092 or 2018 with the short manifold will it be better?
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Old 10-13-2012, 10:26 AM   #3253
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Boss,

What is difference between modified Novarossi 35+21 and modified Novarossi Collari WC09 35+21 ?
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Old 10-14-2012, 08:53 PM   #3254
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I am off to the nats with some amazing RB powerplants from Mr. Murnan himself. Just wanna say thanks for helping me out through this summer i am looking forward to racing with you again at the Nats!
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Old 10-15-2012, 01:56 PM   #3255
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Dear grinder , just finish run in your modify keep-on 21 really love the the low end power .the power worth every drop of nitro . I'm using 2015 pipe with the 5 fin manifold ,can I use Rb 2092 or 2018 with the short manifold will it be better?
I'm glad you like the engine. I have not tried either of those pipes. I have been happy with the 2015. Please try them, and let us know how it feels with those pipes.
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