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Description
ARRMA 39T MOD1 Spool Gear 8mm Bore ARA310951The ARRMA ARA310951 39T MOD1 Spool Gear is a steel 8mm bore drivetrain tuning gear designed for compatible ARRMA spool shaft setups needing adjustable gearing and smooth power transfer. Features Gearing Tuning Option: Allows compatible ARRMA vehicles to be geared for different speed, acceleration, and driving conditions Strong Steel Construction: Durable steel material supports long service life in demanding RC use 39 Tooth Gear: 39T spool gear
The ARRMA ARA310951 39T MOD1 Spool Gear is a steel 8mm bore drivetrain tuning gear designed for compatible ARRMA spool shaft setups needing adjustable gearing and smooth power transfer.
Features
- Gearing Tuning Option: Allows compatible ARRMA vehicles to be geared for different speed, acceleration, and driving conditions
- Strong Steel Construction: Durable steel material supports long service life in demanding RC use
- 39 Tooth Gear: 39T spool gear provides a lower gearing option compared with smaller tooth-count spool gears
- MOD1 Tooth Profile: Precision manufactured MOD1 teeth help provide smooth operation with compatible drivetrain components
- 8mm Bore Fitment: Designed to fit an 8mm diameter spool shaft
- Secure Mounting Hardware: Includes set screw and screw pin hardware for secure installation on the spool shaft
Specifications
- Brand: ARRMA
- Part Number: ARA310951
- Product Type: Spool gear
- Tooth Count: 39T
- Gear Pitch: MOD1
- Bore Size: 8mm
- Material: Steel
- Hardware: M4 set screw and M4 screw pin included
- Application: Compatible ARRMA spool shaft drivetrains using 8mm bore MOD1 spool gears
- Intended Use: Gearing adjustment, drivetrain tuning, replacement, and speed setup work
Includes
- 1 x ARRMA 39T MOD1 spool gear with 8mm bore
- 1 x M4 x 4mm set screw
- 1 x M4 screw pin
FAQ
What is the ARRMA ARA310951 spool gear used for? The ARRMA ARA310951 spool gear is used to fine tune gearing on compatible ARRMA spool shaft drivetrains using an 8mm bore MOD1 gear.
What bore size does this gear have? The ARRMA ARA310951 spool gear has an 8mm bore.
What tooth count is the ARRMA ARA310951 gear? The ARRMA ARA310951 spool gear has 39 teeth and a MOD1 tooth profile.
Does this gear include mounting hardware? Yes. The ARRMA ARA310951 gear includes one M4 x 4mm set screw and one M4 screw pin.
Will this fit every ARRMA vehicle? No. OZRC recommends checking your ARRMA vehicle manual or exploded diagram to confirm ARA310951 is the correct 8mm bore MOD1 spool gear before installation.
Important Notes
- Designed for compatible ARRMA spool shaft setups using an 8mm bore MOD1 spool gear.
- Check your vehicle manual, exploded diagram, motor shaft size, and gear mesh requirements before fitting.
- This listing is for the spool gear and included mounting hardware only. Spool shaft, motor, pinion gear, bearings, and other drivetrain components are not included.
- Changing gearing can affect motor temperature, ESC load, acceleration, and top speed. Monitor electronics temperatures after installation.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 2399 reviews
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Product Reviews
★★★★★ 5
No breakup, very sweet, instalove
Format: Kindle
Omegaverse and doesn't disappoint! Sweet guys, newly Omega FMC. The boyfriends are boyfriends. What's not to love? No angst, no breakup.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 23, 2025
★★★★★ 4
Pretty Darn Good
Format: Kindle
So I’ve been on a omega kick and this definitely hit the spot. Madison was frustrating at times with how she acted towards Lucas, Gray, and Rian. It was like she said towards the end, she didn’t believe she deserved nice things.
It would have been nice to hear from her best friends again. They kind of were there in the beginning and the gone except for mention of text messages received from them. I feel like her friends would have been great help in encouraging Madison to go with the pack and never give Brent another chance because he was toxic.
I loved Rian. His personality was awesome. His humor. His ability to make Madison comfortable whenever she was feeling overwhelmed. And the fact he fell for her and she fell for him first. They are cute together.
I do feel like Lucas was the odd man out though. Like Lucas didn’t develop as much of a relationship with Madison. I would have really liked to see more development in the relationship between them. It was also the same with him and Rian. There is really no relationship displayed. Most of the relationship being displayed is between Rian and Gray.
Nevertheless, I loved reading about the dynamic that came to fruition during the entirety of this story. Madison finally got her happiness. And Brent finally got punched in the face. Everyone got exactly what they deserve.
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Reviewed in the United States on September 6, 2022
★★★★★ 3
Pack's Promise was okay but not great
Format: Kindle
Pack's Promise was okay but not great. I won't recommend it to anyone that I know.
PRO:
* Very likable characters
* Lots of steamy scenes that are written very well
* The spelling and grammar are good
* The punctuation is good with the exception of using hyphens instead of commas. Lots of hyphens. Lots and lots of hyphens.
CON:
* Almost no interactions with any characters outside of Madison and the pack
* Nearly no plot. They meet, get together for a heat, agree to make it permanent, done
* Quite a few typos such as extraneous words, missing words and words out of order
THINGS TO KNOW:
* More steamy scenes than storytelling
* A lot of MM & MMM, some MFMM during heat
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Reviewed in the United States on January 5, 2023
★★★★★ 5
such a good read
Format: Kindle
Madison, Lucas, Grey and Rian were made for each other!!! First time reading from this author and I’m not disappointed!!! Absolutely love the Love in this book and couldn’t ask for a better OV!
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Reviewed in the United States on October 25, 2023
★★★★★ 4
Fluffy and Nice Omegaverse
Format: Kindle
… this would have made 5 stars but for 2 reasons.
A.) there were quite a few typos; misspelled words, missing quotations, “the his” mistakes, and various signs that maybe a proofread would do good.
B.) the writing was quite textbook. Late blooming omega is struggling with her new self, finds a absurdly wealthy pack of alphas, every thing is almost insta-love but she resists, then decides to love herself and let everyone be happy.
Rian was my favourite (obviously the author’s favourite too because he got the most page time) but I wish we could see more of his CEO side? He went to work maybe ONCE the entire time. Gray was supposed to be the “growly one” but he turned out to be puppy dog. Lucas was a genius brainiac doctor - but also super alpha with an aggressive hindbrain with a breeding k*nk?? And then there was no actual “breeding”??
Spice 3/5 - normally omegaverse books are super high on messy smut but this was tamer.
Romance 3/5 - insta-love that was then resisted because of personal hangup’s
Plot 2/5 - weird paced head hopping, showing the same scene from different POV’s that made me feel like it was 2 steps backward, 1 step forward.
Humour 4/5 - there were a dozen lines that genuinely made me chuckle out loud
Would have been five stars but the lack of proofreading and the predictable plot made me unable to get up to ADORED IT level - four stars is still and official ENJOYED IT, y’all. This isn’t a bad rating. The “Club Heat” has intriguing possibilities so I’m going to give the second one a shot.
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Reviewed in the United States on March 31, 2023